Rivers and Streams
The Freshwater Monthly Report offers an overview of current conditions around the state.
Seasonal Continuous Temperature Monitoring covers 53 stations across the state and 108 stations monitored on a five-year rotation.
River and Stream Water Quality Data covers four long-term stations. Seventeen stations have been monitored continuously since 1988.
Long Term Monitoring
River and Stream Water Quality Monitoring discusses the long-term ambient monitoring program. Some of the 66 long-term stations have been monitored for nearly 50 years.
Watershed Health Monitoring is a statistically driven monitoring effort designed to offer a picture of water quality on a region-by-region basis.
Stream Biological Monitoring samples for tiny animals (benthic invertebrates) in river bottoms to assess stream health.
Aquatic Plant Monitoring The Environmental Assessment Program has been monitoring aquatic plant communities since 1991.
Lake Water Quality contains mostly historical information. Ecology monitored lakes for water quality from 1989 to 1999, but funding for the work was discontinued in 2000. Some few lakes are still monitored for toxic metals and other chemicals. Ecology's Look up a Lake from the Coastal Atlas offers data from all of these studies.
Freshwater Monitoring Projects and Studies
Water Quality Improvement (TMDL) Project Studies provide support for the TMDL process to clean Washington's waterways.
The Freshwater Fish Contaminant Monitoring Program samples fish and water across Washington to characterize levels of toxic contaminants and determine changes in levels over time. This project supports a range of agency activities, such as water-cleanup plans, by monitoring a broad range of toxic substances.
Intensively Monitored Watersheds for Salmon Restoration is a project to monitor the effectiveness of salmon-habitat restoration projects.
Forest Practices Effectiveness Monitoring assesses water quality and habitat preservation in forest harvesting.
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